CN113539666B - Preparation method of T-shaped anti-interference soft magnetic ferrite core - Google Patents
Preparation method of T-shaped anti-interference soft magnetic ferrite core Download PDFInfo
- Publication number
- CN113539666B CN113539666B CN202110862117.0A CN202110862117A CN113539666B CN 113539666 B CN113539666 B CN 113539666B CN 202110862117 A CN202110862117 A CN 202110862117A CN 113539666 B CN113539666 B CN 113539666B
- Authority
- CN
- China
- Prior art keywords
- dissolving film
- grinding
- shaped
- ball
- shaped blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B6/00—Cleaning by electrostatic means
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Treatment Devices (AREA)
- Hard Magnetic Materials (AREA)
Abstract
The invention discloses a preparation method of a T-shaped anti-interference soft magnetic ferrite core, which belongs to the technical field of magnetic core preparation, and the scheme can promote repeated friction between a grinding-aid ball and a T-shaped blank by placing a pre-oxidized patch on the surface of an upper dissolving film for friction, firstly can play a role of pre-polishing, reduce the difficulty of polishing the T-shaped soft magnetic ferrite core blank obtained after sintering, secondly can promote water in the grinding-aid ball to contact a lower dissolving film by generating a gap between the grinding-aid ball and the T-shaped blank during friction, and can generate a large amount of heat by contacting main oxygen-absorbing ball air, on one hand can accelerate the dissolving speed of the lower dissolving film by increasing the heat, on the other hand can reduce the air between the pre-oxidized patch and the T-shaped blank by consuming oxygen in the air, reducing the likelihood of oxidation of the T-shaped blank.
Description
Technical Field
The invention relates to the technical field of magnetic core preparation, in particular to a preparation method of a T-shaped anti-interference soft magnetic ferrite magnetic core.
Background
The soft magnetic ferrite is a ferrimagnetic oxide with Fe2O3 as a main component and is produced by a powder metallurgy method. There are several types of Mn-Zn, Cu-Zn, Ni-Zn, etc., among which Mn-Zn ferrite is used in the largest amount and yield, and Mn-Zn ferrite is used in a low resistivity of 1 to 10 ohm/m, generally at a frequency of 100kHZ or less. The Cu-Zn and Ni-Zn ferrites have the resistivity of 102-104 ohm/m, have small loss in a radio frequency band of 100 kHz-10 MHz, and are mainly used for antenna coils for radio and radio intermediate frequency transformers.
Soft magnetic ferrite, as its name suggests, is a magnetic material, its application features "magnetic conduction", as with metal conduction, some materials are magnetic conduction, we call magnetic material, magnetic material is divided into hard magnetic and soft magnetic, so-called hard magnetic material, is a permanent magnet, does not need to be charged with the solenoid to be magnetic, and the magnetism does not disappear, but the soft magnet itself does not have magnetism, only when charged with the solenoid, will produce the magnetic field, when the external current is removed, the magnetic field no longer exists, ferrite refers to the "functional ceramic material" made by mixing and sintering the oxide of iron and other metal oxides, it has better magnetic conductivity, compared with general metal, it has weaker force, the residual magnetism after the external current is removed is small, generally, according to its formulation, it is divided into manganese-zinc ferrite, nickel-zinc series, barium-zinc series, coercive force, barium-zinc series, Magnesium zinc series, etc.
In the prior art, when the T-shaped soft magnetic ferrite is produced, a blank after stamping forming needs to be sintered, zirconium powder is usually directly sprinkled on the surface of the T-shaped soft magnetic ferrite in the traditional process to absorb oxygen during sintering, so that the possibility of oxidation of the T-shaped soft magnetic ferrite in the sintering process is reduced, but in the process of sprinkling the zirconium powder, the zirconium powder can absorb the oxygen, the oxygen amount absorbed by the zirconium powder during sintering can be reduced, and the T-shaped soft magnetic ferrite can be partially oxidized.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a method for preparing a T-shaped anti-interference soft magnetic ferrite magnetic core, the scheme is that a pre-oxidation patch is placed on the surface of an upper dissolution film for friction, can promote the repeated friction between the grinding-aid powder ball and the T-shaped blank, can play a role of pre-polishing at first, reduces the difficulty of subsequently polishing the T-shaped soft magnetic ferrite magnetic core blank obtained after sintering, secondly, when the grinding aid balls are rubbed, gaps are formed among the grinding aid balls, so that water in the grinding aid balls can be promoted to contact with a lower dissolving film, meanwhile, a large amount of heat can be generated by the contact of the air of the main oxygen absorption ball, on one hand, the dissolution speed of the lower dissolution film can be accelerated by the increase of the heat, on the other hand, by the consumption of the oxygen in the air, the air between the pre-oxidation patch and the gap of the T-shaped blank can be reduced, and the possibility of oxidation of the T-shaped blank is reduced.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A preparation method of a T-shaped anti-interference soft magnetic ferrite magnetic core comprises the following steps:
s1, punching the soft magnetic ferrite block to form a T-shaped blank, soaking the T-shaped blank in water for 5min, and respectively covering pre-oxidation patches on the upper surface and the lower surface of the T-shaped blank;
s2, attaching the pre-oxidation patch on the surface of the T-shaped blank by a technician and repeatedly rubbing until the heat felt by the technician is reached, placing the T-shaped blank attached with the pre-oxidation patch on a sintering plate, and putting the T-shaped blank and the sintering plate together into a heating kiln for sintering;
and S3, grinding the T-shaped soft magnetic ferrite core blank obtained in the S3 to obtain the EPD-shaped soft magnetic ferrite core.
Further, the pre-oxidized patch in S1 includes an upper dissolving film and a lower dissolving film located below the upper dissolving film, a plurality of uniformly distributed antioxidant terminals are embedded between the upper dissolving film and the lower dissolving film, the antioxidant terminals include a main oxygen uptake ball located between the upper dissolving film and the lower dissolving film, a metal connecting rope penetrating through the lower dissolving film is fixedly connected to the bottom end of the main oxygen uptake ball, reducing iron powder is fixedly connected to the bottom end of the metal connecting rope, a pair of grinding-aid balls are arranged at the bottom end of the reducing iron powder, the main oxygen uptake ball, the reducing iron powder and the grinding-aid balls are all arranged in an ellipsoid shape, elastic rubber ropes are fixedly connected between the reducing iron powder and the two grinding-aid balls, the elastic rubber ropes are located at two vertical ends of the reducing iron powder, and the grinding-aid balls and the T-shaped blank can be repeatedly rubbed by placing the pre-oxidized patch on the surface of the upper dissolving film, firstly, the grinding aid ball can play a role in pre-grinding to reduce the difficulty in grinding a T-shaped soft magnetic ferrite core blank obtained after sintering, secondly, a gap is formed between the grinding aid ball and the grinding aid ball during friction to promote water in the grinding aid ball to contact a lower dissolved film, and meanwhile, a large amount of heat can be generated by the contact of air of the main oxygen absorption ball;
in addition, by means of heat generated in the reaction process of the main oxygen absorption ball and oxygen, the whole T-shaped blank and the pre-oxidation patch are placed into the heating kiln, the temperature of the metal connecting rope is promoted to be restored to a high-temperature phase state, the metal connecting rope is promoted to deform, the efficiency of dissolving the lower dissolving film is further improved, and by means of deformation of the metal connecting rope, a gap can be generated between the lower dissolving film and the metal connecting rope, nitrogen between the upper dissolving film and the lower dissolving film is gradually released, air in the heating kiln is discharged, and the possibility of oxidizing the T-shaped blank is further reduced.
Furthermore, a plurality of uniformly distributed outer fiber burrs are fixedly connected to the outer end of the elastic rubber rope, a micro-magnetic end ball is fixedly connected to one end, far away from the elastic rubber rope, of each outer fiber burr, the T-shaped blank can be attracted to ferroferric oxide powder by means of ferroferric oxide generated after the main oxygen absorption ball reacts with air by the aid of the arrangement of the outer fiber burrs and the micro-magnetic end ball, on one hand, attachment between the pre-oxidized patch and the T-shaped blank is enabled to be firmer, on the other hand, the metal connecting rope can be pulled down by the aid of adsorption, so that nitrogen release is accelerated, powder generated during friction can be adsorbed by means of generated static electricity by means of mutual friction between the elastic rubber rope and the outer fiber burrs, nitrogen release can be evener by means of powder aggregation, and the micro-magnetic end ball is attracted by the aid of the main oxygen absorption ball, the grinding aid balls are enabled to be close to and mutually contacted with the reducing iron powder, so that gaps between the grinding aid balls and the reducing iron powder are reduced, and nitrogen can be released more uniformly.
Further, the upper dissolving film and the lower dissolving film are both made of edible gelatin materials, nitrogen is filled between the upper dissolving film and the lower dissolving film, the upper dissolving film and the lower dissolving film are made of the edible gelatin materials, the upper dissolving film and the lower dissolving film can be gradually dissolved after being in contact with water, and then the whole T-shaped blank can be promoted to be in an oxygen-free environment during sintering through released nitrogen.
Furthermore, the main oxygen absorption ball is formed by polymerizing zirconium powder, the grinding-aid powder ball is made of quartz sand material, the main oxygen absorption ball can be promoted to absorb oxygen in the using process by using the zirconium powder to make the main oxygen absorption ball, so that the possibility of oxidation of the T-shaped blank is reduced, and the agricultural friction efficiency between the pre-oxidation patch and the grinding-aid powder ball can be improved by using the quartz sand material to make the grinding-aid powder ball.
Furthermore, the metal connecting rope is made of a nickel-titanium memory alloy material, the equilibrium temperature of the metal connecting rope is 40 ℃, and the metal connecting rope is made of the nickel-titanium memory alloy material, so that the metal connecting rope can be promoted to be restored to a high-temperature phase state after the temperature is increased, and the rupture of the dissolving film can be accelerated by means of the deformation of the metal connecting rope.
Further, metallic interconnect rope outer end fixedly connected with release cone thorn through setting up release cone thorn, can take place the in-process of deformation at the metallic interconnect rope, promotes to dissolve the membrane and breaks rapidly down to this release efficiency who improves nitrogen gas.
Further, the elastic rubber rope is made of rubber materials, the outer fiber burrs are made of animal hair, the elastic rubber rope and the outer fiber burrs can be promoted to be provided with static electricity through mutual friction between the elastic rubber rope and the outer fiber burrs, powder generated during friction is adsorbed by means of the generated static electricity, and meanwhile nitrogen can be more uniformly released by means of gathering of the powder.
Furthermore, the micro-magnetic end balls are made of single-sided magnets, and the possibility of mutual attraction between the adjacent micro-magnetic end balls can be reduced by manufacturing the micro-magnetic end balls by using the single-sided magnets.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is through placing the pre-oxidation paster at last dissolving membrane surface friction, can promote to rub repeatedly between grinding-assisted powder ball and the T shape blank, at first can play the effect of polishing in advance, reduce the follow-up degree of difficulty of polishing to the T type soft magnetic ferrite magnetic core blank that obtains after the sintering, secondly when rubbing with the help of grinding-assisted powder ball, produce the clearance each other, can promote water contact dissolving the membrane under in it, simultaneously with the help of the contact of main oxygen uptake ball air, can produce a large amount of heats, can be with the help of thermal increase on the one hand, dissolve the speed that the membrane dissolves under the acceleration, on the other hand with the help of the consumption to oxygen in the air, can reduce the air that is oxidized between paster and T shape blank gap, reduce the possibility of T shape blank.
(2) By means of heat generated in the reaction process of the main oxygen absorption ball and oxygen, the whole T-shaped blank and the pre-oxidation patch are placed into the heating kiln, the temperature of the metal connecting rope is promoted to be restored to a high-temperature phase state, the metal connecting rope is promoted to deform, the efficiency of dissolving the lower dissolving film is further improved, and by means of deformation of the metal connecting rope, a gap can be formed between the lower dissolving film and the metal connecting rope, nitrogen between the upper dissolving film and the lower dissolving film is gradually released, air in the heating kiln is discharged, and the possibility that the T-shaped blank is oxidized is further reduced.
(3) The outer end of the elastic rubber rope is fixedly connected with a plurality of uniformly distributed outer fiber burrs, one end of each outer fiber burr, far away from the elastic rubber rope, is fixedly connected with a micro-magnetic end ball, the outer fiber burrs and the micro-magnetic end balls are arranged, so that a T-shaped blank can be attracted to ferroferric oxide powder by means of ferroferric oxide generated after the main oxygen absorption ball reacts with air, on one hand, the pre-oxidized patch is more firmly attached to the T-shaped blank, on the other hand, the metal connecting rope can be further pulled down by means of adsorption, the release of nitrogen is accelerated, the powder generated during friction can be adsorbed by means of generated static electricity through mutual friction between the elastic rubber rope and the outer fiber burrs, meanwhile, the release of nitrogen can be more uniform by means of powder aggregation, and the micro-magnetic end balls are attracted by means of the main oxygen absorption balls, the grinding aid balls are enabled to be close to and mutually contacted with the reducing iron powder, so that gaps between the grinding aid balls and the reducing iron powder are reduced, and nitrogen can be released more uniformly.
(4) The upper dissolving film and the lower dissolving film are both made of edible gelatin materials, nitrogen is filled between the upper dissolving film and the lower dissolving film, the upper dissolving film and the lower dissolving film are made of the edible gelatin materials, the upper dissolving film and the lower dissolving film can be gradually dissolved after being in contact with water, and then the whole T-shaped blank can be promoted to be in an oxygen-free environment during sintering through released nitrogen.
(5) The main oxygen absorption ball is formed by polymerizing zirconium powder, the grinding-aid ball is made of quartz sand material, the main oxygen absorption ball can be promoted to absorb oxygen in the using process by using the zirconium powder to make the main oxygen absorption ball, so that the possibility that the T-shaped blank is oxidized is reduced, and the agricultural wiping efficiency between the pre-oxidation patch and the grinding-aid ball can be improved by using the quartz sand material to make the grinding-aid ball.
(6) The metal connecting rope is made of a nickel-titanium memory alloy material, the balance temperature of the metal connecting rope is 40 ℃, and the metal connecting rope is made of the nickel-titanium memory alloy material, so that the metal connecting rope can be promoted to be restored to a high-temperature phase state after the temperature rises, and the rupture of the dissolving film can be accelerated by means of the deformation of the metal connecting rope.
(7) The outer end of the metal connecting rope is fixedly connected with a release conical spine, and the release conical spine can promote the lower dissolution film to rapidly break in the deformation process of the metal connecting rope, so that the release efficiency of nitrogen is improved.
(8) The elastic rubber rope is made of rubber materials, the outer fiber burrs are made of animal hair, the elastic rubber rope and the outer fiber burrs can be promoted to be provided with static electricity through mutual friction between the elastic rubber rope and the outer fiber burrs, powder generated during friction is adsorbed by means of the generated static electricity, and meanwhile nitrogen can be released more uniformly by means of gathering of the powder.
(9) The micro-magnetic end balls are made of single-sided magnets, and the possibility of mutual attraction between the adjacent micro-magnetic end balls can be reduced by manufacturing the micro-magnetic end balls by using the single-sided magnets.
Drawings
FIG. 1 is a perspective view of a T-shaped soft ferrite core of the present invention during its fabrication;
FIG. 2 is a cross-sectional view of a portion of a pre-oxidized patch of the present invention;
FIG. 3 is a schematic view of the structure at A in FIG. 2;
fig. 4 is a cross-sectional view of the oxidation resistant terminal of the present invention before deformation;
fig. 5 is a cross-sectional view of the oxidation resistant terminal of the present invention after deformation.
The reference numbers in the figures illustrate:
the device comprises a pre-oxidized patch 1, an upper dissolved film 2, a lower dissolved film 3, an antioxidant terminal 4, a main oxygen absorption ball 5, reducing iron powder 6, a metal connecting rope 7, a release conical spine 701, a grinding-aid powder ball 8, an elastic rubber rope 9, an outer fiber burr 10 and a micro-magnetic end ball 11.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a method for preparing a T-shaped anti-interference soft magnetic ferrite core includes the following steps:
s1, punching the soft magnetic ferrite block to form a T-shaped blank, soaking the T-shaped blank in water for 5min, and covering the upper surface and the lower surface of the T-shaped blank with pre-oxidation patches 1 respectively;
s2, attaching the pre-oxidation patch 1 to the surface of the T-shaped blank by a technician and repeatedly rubbing until the heat felt by the technician is reached, placing the T-shaped blank attached with the pre-oxidation patch 1 on a sintering plate, and putting the T-shaped blank and the sintering plate together into a heating kiln for sintering;
and S3, grinding the T-shaped soft magnetic ferrite core blank obtained in the S3 to obtain the EPD-shaped soft magnetic ferrite core.
Referring to fig. 2-5, a pre-oxidation patch 1 in S1 includes an upper dissolving film 2 and a lower dissolving film 3 located below the upper dissolving film 2, a plurality of uniformly distributed antioxidant terminals 4 are embedded between the upper dissolving film 2 and the lower dissolving film 3, the antioxidant terminals 4 include a main oxygen-absorbing ball 5 located between the upper dissolving film 2 and the lower dissolving film 3, a metal connecting rope 7 penetrating through the lower dissolving film 3 is fixedly connected to a bottom end of the main oxygen-absorbing ball 5, a reducing iron powder 6 is fixedly connected to a bottom end of the metal connecting rope 7, a pair of grinding-assisted powder balls 8 are arranged at a bottom end of the reducing iron powder 6, the main oxygen-absorbing ball 5, the reducing iron powder 6 and the grinding-assisted powder balls 8 are all arranged in an ellipsoidal shape, elastic rubber ropes 9 are fixedly connected between the reducing iron powder 6 and the two grinding-assisted powder balls 8, the elastic rubber ropes 9 are located at two vertical ends of the reducing iron powder 6, and the pre-oxidation patch 1 is placed on the surface of the upper dissolving film 2 for friction, the grinding aid balls 8 can be promoted to rub with the T-shaped blank repeatedly, the effect of pre-polishing can be achieved, the difficulty of polishing a T-shaped soft magnetic ferrite magnetic core blank obtained after sintering is reduced, gaps are formed among the grinding aid balls 8 during rubbing, water in the grinding aid balls can be promoted to contact with the lower dissolved film 3, meanwhile, a large amount of heat can be generated through contact of air of the main oxygen absorption ball 5, on one hand, the dissolving speed of the lower dissolved film 3 can be accelerated through increase of the heat, on the other hand, the air between the pre-oxidation patch 1 and the gap of the T-shaped blank can be reduced through consumption of oxygen in the air, and the possibility that the T-shaped blank is oxidized is reduced;
in addition, by means of the heat generated in the reaction process of the main oxygen absorption ball 5 and oxygen, the whole T-shaped blank and the pre-oxidation patch 1 are placed in the heating kiln, the temperature of the metal connecting rope 7 is promoted to be restored to the high-temperature phase state, so that the metal connecting rope 7 is promoted to deform, the efficiency of dissolving the lower dissolving film 3 is further improved, and by means of the deformation of the metal connecting rope 7, a gap can be generated between the lower dissolving film 3 and the metal connecting rope 7, nitrogen between the upper dissolving film 2 and the lower dissolving film 3 is gradually released, so that air in the heating kiln is discharged, and the possibility of oxidizing the T-shaped blank is further reduced.
Referring to fig. 3, a plurality of uniformly distributed outer fiber burrs 10 are fixedly connected to the outer end of an elastic rubber rope 9, a micro-magnetic end ball 11 is fixedly connected to one end of the outer fiber burr 10 away from the elastic rubber rope 9, the T-shaped blank can be attracted to ferroferric oxide powder by means of ferroferric oxide generated after the main oxygen absorption ball 5 reacts with air by the arrangement of the outer fiber burrs 10 and the micro-magnetic end ball 11, on one hand, the attachment between the pre-oxidation patch 1 and the T-shaped blank is enabled to be firmer, on the other hand, the metal connecting rope 7 can be further pulled down by means of the adsorption effect, so that the release of nitrogen is accelerated, and by means of the mutual friction between the elastic rubber rope 9 and the outer fiber burrs 10, the powder generated during the friction can be adsorbed by means of the generated static electricity, and the release of nitrogen can be more uniform by means of the aggregation of the powder, and the main oxygen absorption ball 5 attracts the micro-magnetic end ball 11 to promote the grinding-assisted powder ball 8 to be close to and contact with the reducing iron powder 6, so that the gap between the grinding-assisted powder ball 8 and the reducing iron powder 6 is reduced, and the nitrogen can be released more uniformly.
Referring to fig. 2-3, the upper dissolving film 2 and the lower dissolving film 3 are both made of edible gelatin material, nitrogen is filled between the upper dissolving film 2 and the lower dissolving film 3, the upper dissolving film 2 and the lower dissolving film 3 are made of edible gelatin material, and can be gradually dissolved after the upper dissolving film 2 and the lower dissolving film 3 are contacted with water, and then the whole T-shaped blank can be promoted to be in an oxygen-free environment during sintering through released nitrogen, the main oxygen absorption ball 5 is formed by polymerizing zirconium powder, the grinding aid ball 8 is made of quartz sand material, the main oxygen absorption ball 5 can be promoted to absorb oxygen in the using process by using zirconium powder to make the main oxygen absorption ball 5, so that the possibility of oxidation of the T-shaped blank is reduced, and the agricultural wiping efficiency between the pre-oxidation patch 1 and the grinding aid ball 8 can be improved by making the grinding aid ball 8 from quartz sand material.
Referring to fig. 3-5, the metal connecting rope 7 is made of a nickel-titanium memory alloy material, the equilibrium temperature of the metal connecting rope 7 is 40 ℃, the metal connecting rope 7 is made of the nickel-titanium memory alloy material, so that the metal connecting rope 7 can be restored to a high-temperature phase state after the temperature is increased, the rupture of the dissolving membrane 3 can be accelerated by means of the deformation of the metal connecting rope 7, the releasing conical spine 701 is fixedly connected to the outer end of the metal connecting rope 7, and the dissolving membrane 3 can be rapidly ruptured by means of the arrangement of the releasing conical spine 701 in the deformation process of the metal connecting rope 7, so that the nitrogen releasing efficiency is improved.
Referring to fig. 3 to 5, the elastic rubber rope 9 is made of rubber, the outer fiber burrs 10 are made of animal hair, the elastic rubber rope 9 and the outer fiber burrs 10 are caused to be charged with static electricity by mutual friction between the elastic rubber rope 9 and the outer fiber burrs 10, powder generated during the friction is adsorbed by the generated static electricity, nitrogen gas can be more uniformly released by the powder accumulation, the micro-magnetic end balls 11 are made of single-sided magnets, and the possibility of mutual attraction between the adjacent micro-magnetic end balls 11 can be reduced by manufacturing the micro-magnetic end balls 11 by the single-sided magnets.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (2)
1. A preparation method of a T-shaped anti-interference soft magnetic ferrite magnetic core is characterized by comprising the following steps: the method comprises the following steps:
s1, punching the soft magnetic ferrite block to form a T-shaped blank, soaking the T-shaped blank in water for 5min, and respectively covering the upper surface and the lower surface of the T-shaped blank with pre-oxidation patches (1);
s2, attaching the pre-oxidation patch (1) to the surface of the T-shaped blank by a technician and repeatedly rubbing until the hand of the technician feels heat, placing the T-shaped blank attached with the pre-oxidation patch (1) on a sintering plate, and putting the T-shaped blank attached with the pre-oxidation patch (1) and the T-shaped blank together into a heating kiln for sintering;
s3, grinding the T-shaped soft magnetic ferrite core blank obtained in the S3 to obtain an EPD-shaped soft magnetic ferrite core;
the preoxidation patch (1) in the S1 comprises an upper dissolving film (2) and a lower dissolving film (3) positioned on the lower side of the upper dissolving film (2), a plurality of uniformly distributed antioxidant terminals (4) are embedded between the upper dissolving film (2) and the lower dissolving film (3), the antioxidant terminals (4) comprise main oxygen absorption balls (5) positioned between the upper dissolving film (2) and the lower dissolving film (3), the bottom ends of the main oxygen absorption balls (5) are fixedly connected with metal connecting ropes (7) penetrating through the lower dissolving film (3), the bottom ends of the metal connecting ropes (7) are fixedly connected with reducing iron powder (6), the bottom ends of the reducing iron powder (6) are provided with a pair of grinding-assisted powder balls (8), the main oxygen absorption balls (5), the reducing iron powder (6) and the grinding-assisted powder balls (8) are all arranged to be ellipsoidal, elastic rubber ropes (9) are fixedly connected between the iron powder (6) and the two grinding-assisted powder balls (8), the elastic rubber ropes (9) are positioned at the two vertical ends of the reducing iron powder (6);
the outer end of the elastic rubber rope (9) is fixedly connected with a plurality of uniformly distributed outer fiber burrs (10), and one end of each outer fiber burr (10) far away from the elastic rubber rope (9) is fixedly connected with a micro-magnetic end ball (11);
the upper dissolving film (2) and the lower dissolving film (3) are both made of edible gelatin materials, and nitrogen is filled between the upper dissolving film (2) and the lower dissolving film (3);
the main oxygen absorption ball (5) is formed by polymerizing zirconium powder, and the grinding-aid powder ball (8) is made of quartz sand material;
the metal connecting rope (7) is made of a nickel-titanium memory alloy material, and the balance temperature of the metal connecting rope (7) is 40 ℃;
the outer end of the metal connecting rope (7) is fixedly connected with a release conical thorn (701).
2. The method for preparing the T-shaped anti-interference soft magnetic ferrite core according to claim 1, characterized in that: the elastic rubber rope (9) is made of rubber material, and the outer fiber burrs (10) are made of animal hair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110862117.0A CN113539666B (en) | 2021-07-29 | 2021-07-29 | Preparation method of T-shaped anti-interference soft magnetic ferrite core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110862117.0A CN113539666B (en) | 2021-07-29 | 2021-07-29 | Preparation method of T-shaped anti-interference soft magnetic ferrite core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113539666A CN113539666A (en) | 2021-10-22 |
| CN113539666B true CN113539666B (en) | 2022-01-28 |
Family
ID=78121523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110862117.0A Active CN113539666B (en) | 2021-07-29 | 2021-07-29 | Preparation method of T-shaped anti-interference soft magnetic ferrite core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113539666B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111874986A (en) * | 2020-07-31 | 2020-11-03 | 何少振 | Activated sludge sewage treatment-based water surface foam adsorption collection ball |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5549195A (en) * | 1978-10-06 | 1980-04-09 | Nippon Sangyo Kikai Kk | Treating method by free contact oxidation and oxidized treated matter |
| CN207781365U (en) * | 2017-12-29 | 2018-08-28 | 沭阳康顺磁性器材有限公司 | Magnetic ferrite magnetic core blank |
| CN110256089A (en) * | 2019-06-12 | 2019-09-20 | 湖南艾迪奥电子科技有限公司 | A kind of magnetic ferrite magnetic core and its sintering method |
| CN112038266B (en) * | 2020-09-04 | 2024-01-26 | 郴州华秋电子有限公司 | Semiconductor silicon chip paster based on hot-binding technology |
| CN112427796B (en) * | 2020-11-11 | 2022-03-25 | 广西天正钢结构有限公司 | Welding process for high-strength low-density steel |
| CN213752288U (en) * | 2020-11-23 | 2021-07-20 | 沭阳康顺磁性器材有限公司 | EP type soft magnetic ferrite magnetic core blank |
| CN113003831A (en) * | 2021-03-15 | 2021-06-22 | 江西省交通运输科学研究院有限公司 | Domestic sewage treatment device and method |
-
2021
- 2021-07-29 CN CN202110862117.0A patent/CN113539666B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111874986A (en) * | 2020-07-31 | 2020-11-03 | 何少振 | Activated sludge sewage treatment-based water surface foam adsorption collection ball |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113539666A (en) | 2021-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106104727B (en) | The manufacturing method and compressed-core of compressed-core | |
| US20070102065A1 (en) | Permanent magnet ring | |
| CN106205992B (en) | The Sintered NdFeB magnet and preparation of high-coercive force and low remanent magnetism temperature sensitivity | |
| CN105830178B (en) | The method for manufacturing rare-earth magnet | |
| JP6506361B2 (en) | Method of manufacturing R-Fe-B sintered magnet | |
| EP1314697A4 (en) | Ferrite material | |
| CN108141994A (en) | Magnetic safe transmission magnetic shielding unit, including its module and include its portable device | |
| CN113539666B (en) | Preparation method of T-shaped anti-interference soft magnetic ferrite core | |
| CN101276668A (en) | Method for preparing nano soft magnetic manganese-zinc ferrite | |
| US1647737A (en) | Magnetic core | |
| CN106531387A (en) | Novel amorphous magnetic powder core and preparation method thereof | |
| JP4922782B2 (en) | Surface mount choke coil | |
| CN102962465B (en) | Low-permeability, low-power consumption Fe-Si-Al soft magnetic material and production method thereof | |
| CN109994297A (en) | A kind of Fe with core-shell structure3Si/Al2O3Composite magnetic powder core and preparation method thereof | |
| CN100372801C (en) | Low-temperature preparation method for high-frequency power ferrite material | |
| CN106653277B (en) | Height leads Fe-Si-Al magnetic core and preparation method thereof | |
| CN111161934A (en) | Amorphous nano Fe-Ni magnetic powder core and preparation method and application thereof | |
| CN106653278B (en) | Iron silicon magnetic core and preparation method thereof | |
| US11192183B2 (en) | Method for manufacturing powder magnetic core | |
| CN112620632B (en) | Method for modifying powder metallurgy magnetic material based on pulsed magnetic field | |
| JP2009215152A (en) | Sintered ferrite material | |
| CN112408971A (en) | Power type ferrite material and preparation method thereof | |
| CN208250680U (en) | A kind of take off automatically washes hosiery machine | |
| CN109513933B (en) | Preparation method of iron-based soft magnetic core with high temperature resistance and high surface resistance | |
| CN207338052U (en) | A kind of darkening mechanism electromagnetic iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |